drm/ttm: Export symbols needed for the vmwgfx driver.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/ttm/ttm_bo_util.c

@@ -369,6 +369,7 @@ pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp)
 #endif
 	return tmp;
 }
+EXPORT_SYMBOL(ttm_io_prot);
 
 static int ttm_bo_ioremap(struct ttm_buffer_object *bo,
 			  unsigned long bus_base,

drivers/gpu/drm/ttm/ttm_memory.c

@@ -461,6 +461,7 @@ void ttm_mem_global_free(struct ttm_mem_global *glob,
 {
 	return ttm_mem_global_free_zone(glob, NULL, amount);
 }
+EXPORT_SYMBOL(ttm_mem_global_free);
 
 static int ttm_mem_global_reserve(struct ttm_mem_global *glob,
 				  struct ttm_mem_zone *single_zone,
@@ -534,6 +535,7 @@ int ttm_mem_global_alloc(struct ttm_mem_global *glob, uint64_t memory,
 	return ttm_mem_global_alloc_zone(glob, NULL, memory, no_wait,
 					 interruptible);
 }
+EXPORT_SYMBOL(ttm_mem_global_alloc);
 
 int ttm_mem_global_alloc_page(struct ttm_mem_global *glob,
 			      struct page *page,
@@ -589,3 +591,4 @@ size_t ttm_round_pot(size_t size)
 	}
 	return 0;
 }
+EXPORT_SYMBOL(ttm_round_pot);

drivers/gpu/drm/ttm/ttm_tt.c

@@ -192,6 +192,7 @@ int ttm_tt_populate(struct ttm_tt *ttm)
 	ttm->state = tt_unbound;
 	return 0;
 }
+EXPORT_SYMBOL(ttm_tt_populate);
 
 #ifdef CONFIG_X86
 static inline int ttm_tt_set_page_caching(struct page *p,

include/drm/ttm/ttm_bo_driver.h

@@ -544,6 +544,15 @@ extern int ttm_tt_set_user(struct ttm_tt *ttm,
  */
 extern int ttm_tt_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem);
 
+/**
+ * ttm_tt_populate:
+ *
+ * @ttm: The struct ttm_tt to contain the backing pages.
+ *
+ * Add backing pages to all of @ttm
+ */
+extern int ttm_tt_populate(struct ttm_tt *ttm);
+
 /**
  * ttm_ttm_destroy:
  *